CMD has a tutorial (below) on creating 2D kaleidoscopes in After Effects. As many have, instead of the built-in CC Kaleida, they used Pete'sPlugins, which is no longer developed. You could also use Sapphire Kaleido, AIST ProFX Xkaleido, or the unique Omino Kaleidoscope from the free Omino After Effects Suite (demo below). Storek nVeil, a Mac FxPlug, is another possibility; see the review by Oliver Peters.